Perhaps the depth of love can be calibrated by the number of different selves that are actively involved in a given relationship.

Perhaps the depth of love can be calibrated by the number of different selves that are actively involved in a given relationship.

也许爱的深度可以通过在特定关系中积极参与的不同自我的数量来衡量。

-- Carl Sagan 卡尔·萨根